Non-stretchable mattress



C. Z. HERMANN.

.NON-STRETCHABLE MATTRESS.

APPLICATION FILED MAYIQ, 1919.

Patented Mar. 16,1920.

INVENTOR. Ohd/rsZ/aermafln BY W WTTORNEYS CHARLES z. HERMANN, or LOS Ancrinns, CALIFORNIA.

NON-STRETCHABLE MATTRESS.

7 Specification of Letters Patent.

Patented Mar. 16, 1920.

Application fil ed. May 19, 1919. Serial no. 298,258.

To all whom it may concern Be it known that I, CHARLES Z. HERMANN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Non-Stretchable-h/Iattresses, of which the following is a specification.

My object is to make an improved nonstretchable mattress cover, andmy invention consists of the novel features herein shown, described and claimed.

Figure 1 is a fragmentary perspectlve of a mattress provided with a non-stretchable cover in accordance with the principles of my invention.

Fig. 2 is a fragmentary perspective of the mattress cover turned bottom upward as in the process of construction.

Fig. 3 is a fragmentary elevation showing one step in the process of construct1on.

Fig. l is a fragmentary elevation showin another step in the process of construction.

Fig. 5 is a fragmentary perspective upon an enlarged scale of the mattress cover and showing one intersection of the crossed seams and plaits.

In the process of construction of the niattress cover shown in Figs. 2, 3 and 4, the cover fabric 1 is folded upon itself upon the line 2 and a wavy line of stitching 3 applied through both thicknesses of the fold ed fabric, said line of stitching 3 runningsubstantially to the folded edge 4 of the fabric at the points 5, 6, 7 and so on, and said line of stitching being bowed away from the edge at between the points 5, 6 and 7. The fabric is again folded upon the line 8 and wavy line of stitching 9 applied through both thicknesses of the folded .fab-

ric, said line of stitching 9 running to the folded edge 10 at the points 11, 12, 13 and so on, and said line of stitching bowing away from the edge 10 between the points 11, 12 and 13. Then the fabric is again folded upon the line 14: and a wavy line of stitching 15 applied through both thicknesses of the folded fabric, said line ofstitching running to the folded edge 16 at the points 17, 18, 19 and so on, and said line of stitching bowing away from the edge 16 between the points 17, 18 and 19.

After the fabric has been thus plaited in one direction the fabric is turned and folded upon the line 20 andthe wavy line of stitching 21 applied, said'line of stitching 21running to the folded edge 22 of the fabric at the points 23, 24 and so on,'and said line'of stitching 20 bowing away from the edge 22 between the points 23, 24 and so on, and said line of stitching 21 crossing the lines; of stitching 3, 9 and 15 at. the points 25, 26, 27 and so on. Then the fabric is again folded upon the line 28 and the wavy line of stitching 29 applied,saidline of stitching 29 running to the foldededge 30 at the points 31,32 and so on, and said line of stitching 29 bowing away from the edge 30 between the points 31, 32 and so on, and said line of stitching 29 crossing the lines 3, 9 and 15 at the points 33, 34:, 35 and so on, and then the fabric is again folded upon the line 36 and the wavy line of stitching 37 applied, said line of stitching 37 "running to the folded edge 38 at the points 39, etO'and so on, and said line of stitching 37 bowing away from the edge 38 between the points 39, 40 and so on, and

said line of stitching 37 crossing the lines 3, 9 and 15 at, the points 41, 42, a3 and so on. From the points 25, 26 and 27 the lines of stitching 3, 9, and 15 run straight to the edge 4 and from the points 25, 33, 11 and so on, the lines of stitching 21, 29, 37 and so on, run straight to the edge 45.

After the fabric has been plaited one way and then plaited the other way the squares 416, 47, 48, 49 and so on, have convex edges. and when the mattress has been constructed I and tufted the tufts 50, 51, 52, 53 and so on applied the square biscuits formed by the tufts will present a practically smooth surface, and the normal strain upon the fabric will be equalized in all directions.

The corner biscuit 54L and the edge biscuits 55, 56, 57, 58, 59 and so on will be smooth and practically straight upon their outer edges so as to make the edge faces 60 and.61 square and true.

Referring to Fig. 1, the biscuits are bounded by imaginary lines running at right angles through the tufts and the biscuit 46 is bounded by the dotted line 62 connecting the tufts 50, 51, 52 and 53.

The distance between the tufts 50 and 51 is greater upon the surface of the fabric than in a straight line between the tufts, and likewise the distances between the tufts 50 and 52, and 50 and 53, and 52 and 53 are greater upon the surface of the fabric than in a straight line. The lines of stitching 9 and 29 cross at the center of the biscuit 46 and the biscuit is shorter upon these lines upon the surface of the fabric than upon the lines between the tufts. The point '34 at which the lines 9 and 29 cross is the center of the biscuit.

This particular plaiting of the mattress cover is made desirable by the fact that the tufts pull thejcover down and the cover bulges between the tufts.

Heretofore tuftingra fiat cover wrinkles the cover and places the strain unevenly upon the fabric. The plaits formed by making the crossed wavy lines of stitching serve to strengthen the fabric at the highest parts of the biscuits and these are the points which usually wear and tear in the use of the mattress. J n

Thus I have produced a mattress cover folded and plaited lengthwise and crosswise,

7 the seams forming the plaits bowing outcover consisting of a fabric folded and plaited in planes extending crosswise and lengthwise, and tufts applied at the centers of the squares formed by the intersections of the planes.

2. A non-stretchable mattress having a cover consisting of a fabric folded and plaited crosswise and lengthwise, the seams forming the plaits bowing outwardly from the points of intersection of the plaits and seams, and tufts applied atthe'v centers of the squares formed by the intersections of the plaits and seams.

In testimony whereof I have signed my name to this specification.

CHAS. Z. HERMANN. 

